{
  "manageEntity": {
    "action": "Save",
    "entityId": "128351069",
    "entityType": "Track",
    "nonce": "0xdddde36e5f2164cbef3d49f6e0a2a03759d58f594149679107c40c7fc3c3a5d4",
    "signature": "0xe24ed43ef6dd2fbe075a0b68ce19c4218d2f0dce6e725e82b062455084752e993a73035e3dc8ed97db3549d10403a2cbe916f9af3ad294a56d1303ae9245b6791b",
    "signer": "0xa2DaB1ebF6D10325b0948C994b592F7abB2Df44C",
    "userId": "728570067"
  }
}